Level: Stage 1-1: Beam Caster

Level: Stage 1-2: Beam Caster (Giant)

Level: Stage 2-1: Goldar

Level: Stage 2-2: Goldar (Giant)

Level: Stage 3-1: The Jaws of Destruction

Level: Stage 3-2: The Jaws of Destruction (Giant)

Level: Stage 4-1: Ooze Men (Town)

Level: Stage 4-2: Ooze Men (City)

Level: Stage 5: Hornitron

Level: Stage 6-1: Ivan Ecto M.

Level: Stage 6-2: Ivan Ecto M. (Moon)